Machine for clarifying and filtering liquids and fluid substances.



T. B. MARSHALL. MACJH'INE POE OLARIFYING AND FILTERING LIQUIDS AND FLUID SUBSTANCES. APPLICATION FILED SEPT.1B. 1007.

955,889, I v Patented Apr. 26, 1910.

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Hthe outer end. of th periphery. In order to avoid 7 without weakening the.

in this compartment.

UNITED STATES arana OFFICE.

THOMAS B. MARSHALL, OF POUGHKEEPSIE, NEW YORK, ASSIGNOR TO THE DE LAVAL SEPARATOR COMPANY, A

CORPORATION OF NEW JERSEY.

M AOHINE FOR CLARIFYING AND FILTERING LIQUIDS AND FLUID SUBSTANCES.

Specification of Letters Patent.

Patented Apr. 26, 1910.

Application filed September 18, 1907. Serial No. 393,429.

To all whom it may concern:.

Be it known that I, THOMAS B. MARsrIALL, a subject of the King of Great Britain, formerly of Toronto, Canada, residing Poughkee sic, county of Dutchess, and b of New ork, have mvented a 'new and useful Im rovement in Machines for Clarif ing an Filterin r Liquids and Fluid Substances, of whic the following is a full, clear, and exact description, reference bein had to the accompanyin drawings, whic form a part of this s e'cification.

y invention has or its tate for instance, oils and varnishes. S eaking generally, I accomplish this result' y providing-a primary separation of the heaviest solid material in a compartment devoid of filtering material in which the separation is due alone to the action of centritugal force, and then leading the partially treated substance to a second com artment provided with means to filter in which the finer solid matter islremoved. In the first compartment, if liners are used, a passage is provided between the periphery of the bowl and ese liners for the collection of the separated solid materials. The second compartment may be provided with a periphery face and a plurality of staggered openings to cause follow a sinuous course in its ivisions having the liquid to passage to the weakening the peripheral wall of the compartment by too arge a number of openings, I limit the number of said openings and back up the periphery with a supplemental filter formed of a wire screen backed with filtering material. .Inthis way the filtering surfac e is equal to the peripheral wall of'the bowl eripheral 'wall' and the openings therein f rm outlets. I can also use a number of filtering screens with- Practically- I use a two-compartment bowl; in one com artment, the heavier-particles are separate out by centrifugal force alone, while in the other compartment the action is a dualone of centrifugal action and filtering.

I will now describe my invention as illus trated in the accompanying drawings in which:

Figure-1 is an elevation of bowl, shown partially in sectio a se arating n. gig. 2 is object to clarify and filter liquids and fluid substances, as,

having opemn s over its sura sectional view showing a portion of a modified form of bowl.

a is'the primary bowl devoid of a filter.

b is the bowl spindle which is rewilved' in the ordinary, and well known manner; 2 are liner plates. 1

. 'd is a passa between the end of the liner .plates 0 and tie periphery of bowl 1;.

e is thesecond bowl or compartment having orifices f in its periphery. This bowl or compartment 0 is secured to bowl (L so as to rotate in unison therewith, the wall g forming the bottom wall of bowl 0 and the neck of how] a. Below the wall 1 and in bowl (I is the passage h closed at the top by flange i. Through the wall is the orifice j forming the outlet for the liquid from bowl (I. This outlet leads to bowl 0. I do not intend to limit myself to the osi'tion shown for this outlet j. The perip iery of bowl 0 is perforated and has a backing composed of a wire screen is of fine mesh, against the back of which is placed the filtering material 9 which may be of filtering paper or cloth. If desired, there may be placed in the bowl '6 a plurality of concentric cylinders m dividing the bowl e into a pluralityofchambers,

the walls of the cylinders. having openings 92 therethrough, said openings being at the top and bottom, alternately, of the cylinders. (See Fig. 2). A plurality of screens 7: and filtering material Z may also be used in the bowl e. (See Fig. 2). I may also in some cases use the screens alone between the pe riphery and center of the bowl. v

.The operation "is as follows: The liquid to be purified or cla 'ified is entered throu h the feed tube 0 anddistributed between t e liners c by the orified Wings 1. Under the action of centrifu a1 force; the liquid is forced to the perip 'ery. A certain portion of the solid material, the coarser and heavier, collects in the assage 03 while the liquid, carrying with it the lightcrsolid material, passes to the passage h and through the orifice 7' to the interior of the bowl or compartment e where the li uid is again subjected to the actionof centrifugal force. In this case, however,-the liquid is subjectd bothto-the action ofcentrifugal force and a filtering action by being forced through the filtering material. and out through the orifioesu'n the periphery of the bowl, the solid material being caught and held by the filtering material.

ion

. Broadly consideredi/my invention consists in separating theheavier solid constituents in one compartment or bowl and then separating the rcmafinm and lighter solid there not constituents in" secon compartment or- I V anfioutlet from the first compartment or. owl to the other com artment or bowl. I. donot intend to imit myself tothe relationo location shown of Having n ow fully described my invention,

what I claim and desire to 'ter's Patent is:

protect by Let 1. In a machine for clarifying and filtering liquids and fluid substances, in combinatiom a two compartment. rotatable bowl, one compartment being} superposed upon the other,.one compartment havin a solid outer" wall, the other a perforatedltering outer wall, an inlet to 'thecompartment having,

a solidpleriphery and a fluid connection bee outer portion of said compartment and the inner portion of-the compartment having a-perforated periphery' Q2. Iii-a machine for olarifyingand filterin H uids and fluid substances'i-in combitween t -n'a tion, a two compartment rotatable bowl, [one compartment being superposed upon the other,one compartment having a solldouter wall, the other aperforated fiiterin buter Wall, an inlet to. the compartmentfii a solid periphery and a fluid connection between the outer portion of said compartaving ment and the inner portion of the compartment having a perforated periphery, and filters in said last mentioned compartment between its outer and inner portion.

8. In a machine for cl'arifying and filtering liquids and fluid substances, in combination, a two compartment rotatable bowl, an inlet to one compartment and a single oulet from said compartment, said outlet leadingto said second compartment, the first mentioned compartment having a solid outer wall, and-the second mentioned compall'pment having a perforated filtering outer wa 5. In a machine for clarifying and filtering liquids and fluid substances, in oombi nation, a rotating compartment having a solid outer wall, a second rotatin compartment, walls in said last mentioned compartment concentribwwith said bowl, there being openings through said walls alternately at top and bottom thereof, there being a discharge outlet from the first compartment leading to the inner portion of the second compartment. I

In testimony of which invention, I have hereunto set my hand, at New York, on this 13th day of Se tember, 1907. v

- TIIOMAS B. MARSHALL. 'Witnesses:

GEO. R. REMINGTON, RALPH S'roDDAnpL 

